Possibility Storm, Deafening Silence, and Drannith Magistrate let my opponent cast a creature
I have Possibility Storm, Deafening Silence, and Drannith Magistrate out. My opponent cast a siege rhino. Possibility storm triggered, exiling Niv Mizzet. My opponent was then able to cast that Niv Mizzet from exile even though Drannith Magistrate should have prevented this.
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